Quick! Grab a toothbrush and a roll of quarters, toss 'em in your favorite fanny pack and meet us at the slot machines. Allegiant has some pretty snazzy summer fares to Las Vegas, for as little as $38 round-trip. $38?! With your luck, you'll rake in twice that in your first 30 minutes at the craps table. And that's before we even factor in the value of all those free margs you so enjoy drinking. These fares are good for June and July travel, and we don't imagine they'll last long, so put the pedal to the metal, people.